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Photo of a genuine Sonicaid®, the original Doppler fetal monitor. A Doppler fetal monitor, informally known as sonicaid (generic trademark), is a hand-held ultrasound transducer used to detect the fetal heartbeat for prenatal care. It uses the Doppler effect to provide an audible simulation of the heart beat. Some models also display the heart ...
External cardiotocography can be used for continuous or intermittent monitoring. The fetal heart rate and the activity of the uterine muscle are detected by two transducers placed on the mother's abdomen, with one above the fetal heart to monitor heart rate, and the other at the fundus of the uterus
These tests can include prenatal testing, such as fetal movement and amniotic fluid levels, Doppler examination, or fetal heart rate. [36] Another risk factor is premature birth in which medical intervention, such as premature birth prevention or C-section delivery, can be used as prevention for intrauterine hypoxia.
A normal nonstress test will show a baseline fetal heart rate between 110 and 160 beats per minute with moderate variability (5- to 25-interbeat variability) and 2 qualifying accelerations in 20 minutes with no decelerations. "Reactive" is defined as the presence of two or more fetal heart rate accelerations within a 20-minute period. Each ...
Fetal biophysical profile test scoring; Doppler velocimetry; Routine ultrasound scanning; Detection and management of maternal diabetes mellitus; Antenatal fetal heart rate monitoring using cardiotocography; Vibroacoustic stimulation, fetal movement counting; Home vs. hospital-based bed rest and monitoring in high-risk pregnancy
Doppler fetal monitors, although usually not technically -graphy but rather sound-generating, use the Doppler effect to detect the fetal heartbeat for prenatal care. These are hand-held, and some models also display the heart rate in beats per minute (BPM). Use of this monitor is sometimes known as Doppler auscultation.
The condition is detected most often with electronic fetal heart rate (FHR) monitoring through cardiotocography (CTG), which allows clinicians to measure changes in the fetal cardiac response to declining oxygen. [1] [5] [4] Specifically, heart rate decelerations detected on CTG can represent danger to the fetus and to delivery. [4]
Doppler fetal heart rate monitoring (Mother's) blood and urine tests; Discussion with caregiver; In some countries, such as the UK, the symphysial fundal height (SFH) is measured as part of antenatal appointments from 25 weeks gestation. [12] (The SFH is measured from the woman's pubic bone to the top of the uterus. [13])